Punch plug receptacle for hand punches



April 1, '1952 R. A. LQRENZEN 2,590,984

PUNCHPLUG RECEPTACLE FOR-BAND PUNCHES Filed May 13,

- INVENTOR.. Qov A. LORENZEN Patented Apr. 1, 1952 UNITED '5 PUNCH PLUGRECEPTACLE FOR HAND PUNCHES Boy A; Lorenzen, Chicago, Ill. ApplicationMay1 3, 1949, Serial No. 93,139

K This invention relates to hand punches, and more particularly to apunch plug or punching receptacle attachable to a hand punch totemporarily contain the plugs punched out of the work pieces by thepunch.

It'is among the objects of the invention to provide an improved punchplug receptacle assembly for a hand punch which assembly can be easilyapplied to the punch with no material modification of the punch andwhich includes a cup of transparent material and a bushing nut whichsimultaneously secures the punch tube to the punch jaw and provides aretaining seat for the cup, which receptacle assembly will retain thepunch plugs or punchings, so that they will not be spilled upon thefloor or upon the bedwhen, as is frequently the case, a hand punch isused by a person confined to bed, which is easily dis-assembled foremptying the cup, when necessary, as determined by inspection of thetransparent cup, and which is simple and durable in construction,economical to manufacture, and neat and attractive in appearance.

Other objects and advantages will become apparent from a considerationof the following description and the appended claims in conjunction withthe accompanying drawing, wherein:

Figure 1 is a side elevation of a conventional hand punch for punchingleather and similar material, showing a punch plug receptacle assemblyoperatively positioned on the punch;

Figure 2 is a longitudinal, medial cross-section on an enlarged scale ofthe punch plug receptacle assembly and punch tube, and is takensubstantially on the line 2-2 of Figure 1;

Figure 3 is a transverse cross-section on the line 3-3 of Figure 1; and

Figure'4 is a bottom plan view on an enlarged "2 Claims'l' (Cl. 164121)2 anvil l8 to the open position of the punch. The side members I I and12 may be formed of suitable sheet metal stock stamped or otherwiseformed to a generally U-shaped cross-section and to the desired shape ofthe handle and jaw portions.

As the hand punch, itself, is of conventional construction, andconstitutes no part of the present invention, except in the combinationthereof with the novel punch plug'receptacle assemscale of the punchtube and punch tube supporting jaw of the punch illustrated in Figure 1.

With continued reference to the drawing, the hand punch comprises twocrossed-over side members H and I2 pivotally interconnected intermediatetheir ends by a pivot pin 13. The side members II and I2 compriserespective handles and [5 at one side of the pivot pin l3, andrespective jaws l6 and H at the side of the pivot pin opposite thehandles. The jaw l6 carries on its inner side and adjacent its outer enda suitable anvil IB, and the jaw 11 carries a punch tube IS, the cuttingend of which is opposed to the anvil [8. A torsion spring 20 surroundsthe pivot pin I3 and bears at its ends against the handles 14 and [5 toresiliently separate the handies and move the punch tube l9 away fromthe bly, a further description of the punch is considered unnecessaryfor the purposes of the pres.- ent disclosure.

The punch tube 19 is a hollow, tapered body sharpened at its smaller endto provide a cutting or punching edge and provided near its larger endwith an outwardly-extending, annular flange 2 I. At the side of theflange opposite the smaller end of the punch tube, this tube is providedwith an externally screw-threaded, cylindrical boss 22, and the punchjaw I1 is provided near its outer end with an aperture 23 through whichthe boss 22 extends with the flange 2| providing an annular shoulderbearing against the inner side of the jaw around the aperture 23.

conventionally the punch tube I9 is secured to the jaw I! by an ordinarynut threaded onto the screw-threaded boss 22 of the tube and clampingthe jaw ll between itself and the shoulder flange 2! of the tube.

In the application of the present invention, the ordinary nutconventionally securing the punch tube to the punch jaw is discarded anda special nut 25 is substituted therefor. The nut 25 includes aninternally screw-threaded, non-circular portion 26 threadedly receivingthe screwthreaded boss of the tube [9, and a cylindrical extension orbushing 21 extending from one side of the portion 26 concentrically withthe screwthreaded, boss-receiving opening in such portion. If desired,an internal annular shoulder 28 may be provided in the nutat the innerend of the screw threads in the portion 28to abut the end of the boss 22of the punch tube.

An elongated, cylindrical receptacle 30, formed of a suitabletransparent material, such as a synthetic resin plastic, has one endclosed by a substantially hemispherical end wall 3|, and has itsopposite end open and terminating in a plane substantially perpendicularto the longitudinal center-line of the receptacle. The receptacle 30 istelescopically engageable at its open end with the cylindrical bushing21 of the nut 25 to releasably secure the receptacle to the nut. In thearrangement illustrated, the receptacle 30 receives the bushing 21, andthe receptacle is provided, around its open end, with an annularreinforcing bead 32.

The receptacle 30 is dimensioned to have a capacity sufiicient to holdthe punch plugs or punchings produced during a reasonable period ofoperation of the punch. The quantity of punchings in the receptacle canbe easily determined by inspection, because of the transparent nature ofthe receptacle walls, and, as soon as the receptacle has been filledwith punchings, it can be slipped off of the bushing 21 and emptiedwithout spilling any of the punch plugs or punchings on the floor or onthe bed of a person using the punch. As soon as the receptacle 30 hasbeen emptied, it may be quickly and easily replaced and use of the punchresumed.

The invention may be embodied in other specific forms without departingfrom the xspirit or essential characteristics thereof. The presentembodiment is, therefore, to be considered in all respects asillustrative and not restrictive, the scope of the invention beingindicated by the appended claims rather than by the foregoin'gdescription, and all changes which come within the meaning and range ofequivalency of the claims, are therefore, intended to be embracedtherein.

What is claimed is:

1. In combination with a hand punch having an apertured jaw and a punchtube provided with a screw threaded boss received in the jaw apertureand extending through the jawand an annular shoulder bearing against theinner side of the jaw around the aperture, a punch plug receptacleassembly comprising a nut threaded onto the punch tube at the oppositeside of the jaw from the punch tube shoulder, a cylindrical for saidcup.

extension on the side of said nut remote from the punch jaw, and anelongated cup having a closed end and an open end telescopically engagedat its open end with said cylindrical extension and in communicationwith said punch tube.

2. In combination with a hand punch having an apertured jaw and a punchtube provided with a screw-threaded boss threaded into the jaw apertureand extending through the jaw and an annular shoulder bearing againstthe inner side of the jaw around the aperture, a punch plug receptacleassembly comprising a lock nut threadable onto the punch tube at theside of the jaw remote from the punch tube shoulder. a cylindricalextension on the side of said nut remote from the punch jaw, and anelongated cup having a closed end and an open end telescopically engagedat its-open end with said cylindrical extension and in communicationwith the punch tube, said cup being formed of transparent material andhaving a rounded end wall at its closed end and said lock nut lockingsaid punch tube in said jaw -and providing a support ROY A. LCiPil'ETN-ZENv REFERENCES CITED The following references are of record in the fileof this patent:

UNITED STATES Number Name Date 317,181 Osborne May 5, 1885 541,199 EbertJune 18, 1895 2,120,682 Sharp June 1'4, 1938 2,266,393 Hoffman Dec. 18,I941

